Opening Single Player Explorer Map to Lan/Online

[Darrin Wilson 1]

I have a single player explore world that I would like to open to multiplayer for my stepson to play on as well.  I've gone  through the steps to open and publish it to online play but I don't understand how he can determine which of the many available servers it is.  There seem to be a ton of generically named servers with nothing to indicate which one is mine. Is there a way I can rename it or have him search for mine specifically?

[Energritz_ 107]

You can have him click "Region" checkbox in the list of servers, which will cut the server down to that region, the list of servers should be way shorter

Other than that, when you click a server, under the little picture it should say Hosted by: This should be your steam name (if im not mistaken)